Business Calculators
Cash Flow Calculator
Project monthly cash movements and see how long the current balance lasts at your present burn rate.
Net monthly cash flow
-$12,000.00
- Runway
- 60 months
- Cash-flow positive in
- 7 months
- Lowest projected balance
- $137,041
How this calculator works
Each month: cash = cash + revenue − costs, with revenue growing at the stated rate
- runway
- months before the balance reaches zero
Example calculation
Illustrative example — not advice
Worked example — the cash flow calculator as it loads, using the default figures below.
- 01Enter cash on hand: $180,000.
- 02Enter monthly cash in: $62,000.
- 03Enter monthly cash out: $74,000.
- 04Enter monthly revenue growth: 3%.
- 05Read the net monthly cash flow from the results panel: -$12,000.00.
Net monthly cash flow: -$12,000.00. Runway: 60 months. Cash-flow positive in: 7 months. Lowest projected balance: $137,041.
These figures come straight from the calculator above running on the values listed, so you can retype them and confirm every number yourself. Change any input and the results update immediately. Illustrative only — not a quote, offer or recommendation.
Important considerations
- Late-paying customers turn a profitable business into a cash-poor one.
- Tax and payroll dates create predictable troughs worth modelling.
Related calculators
- Break-Even CalculatorUnits and revenue needed to break even.
- Business Loan Payment CalculatorBusiness borrowing repayments and total cost.
- Profit Margin CalculatorGross, operating and net margin from your numbers.
- Employee Cost CalculatorThe fully loaded annual cost of a hire.
- Business Loan CalculatorRepayments and total cost on a business term loan.
- Markup CalculatorSelling price from cost and target markup.
Terms used here
Frequently asked questions
Why can a profitable business run out of cash?
Profit is recognised when invoiced; cash arrives when paid. The gap is where businesses fail.
Disclaimer
Legamoney calculators are educational tools. Results are estimates based on the figures you enter and do not constitute financial, tax or legal advice.
Last reviewed 2026-08-01